Drilling-machine



(No Model.) 7 2 Sheets-Sheet 1.

P. G. MARCH.

DRILLING MACHINE. No. 309,073. Patented Dec. 9, 1884.

2 Sheets-Sheet 2.

(No Model.)

P. G MARCH.

DRILLING MACHINE.

Patented Dec. 9, 1884.

llnirnn Sra'rns A'rniv'r rrrcie.

PERRIN G. llIAItCI-I, OF CINCINNATI, OHIO.

DRILLlNG-MACHINE.

QPECIFICATIQN forming part of Letters Patent No. 309,073, dated December9, 1884.

Application filed February 2, 1884. (No model.)

To (@511 whom, it may concern:

Be it known that I, Pnnnnv G. Manon, a citizen of the United States, anda resident of Cincinnati, in the county of Hamilton and State of Ohio,have invented certain new and useful Improvements in Drill-Presses, ofwhich the following is a specification.

My invention relates to an improvement in drill-presses.

The object of my invention is to provide a table. capable of beingadjusted radially, angularly, and vertically under the drill-tool,enabling radial, angular, and vertical drilling to be accomplished'readily on the same machine. This I accomplish by the construction andcombination of devices hereinafter described and claimed, referencebeing made to the accompanying drawings, in which Figure 1 is a sideelevation of the drill-press with my improvement attached. Fig. 2 is asectional plan on line 00 m, Figs. 1, 3, i. Fig. 3 is a sectionalelevation on line 3 1 Figs. 1 and 2. Fig. etis a section of line 1 y,Fig. 2. Fig. 5 is a broken elevation of one section of the table arm orbracket. Fig. 6 is a broken sectional elevation on the two sections ofthe table-arm on line 00 .90, Fig. 2.

A represents thebase, B the pillar or column, Cthe drill-spindle, and DD E E, driving pulleys and gear, of an ordinary drill-press. A verticalrack-bar, F, is arranged looselyat the side of the pillar B, its lowerend being supported by an annular shoulder, a, at the base of thepillar. The sectional arm carrying the work supporting the table isindicated at G G. The inner section,G,is provided with ahousing or box,5 in which is journaled the pinion b, the rack F engaging said pinionand passing through the housing 9 between the pillar and the pinion.

Section G is attached to the follows:

0 cl represent disks cast on and with the sections G G, respectively,through which passes the axis H, forming the j ournal on which thesection G may be turned for adjustment.

In order to prevent any lateral motion of the table supported on thesection G,I provide an annular groove-bearing, e 2', formed on theperiphery of the disks 0 (Z, as shown in Figs. 2, 5, and 6.

section G, as

I represents a circular Tgroove formed in the face of disk (1, toreceive afastening-bolt, J which passes through a hole in disk 0, towhich it is secured by a nut, j.

K represents an opening in the circular groove I, for the insertion ofthe head J of bolt J into said circular groove.

WVhen it is desired to move the section G, nut j is loosened so that thebolt will move with the disk 0 around in the T-slot. section G is madehollow or open for the purpose of lightness, as well as enabling thescrews or nuts to be turned.

L represents a key or pin passed through the flange e.

it represents a series of holes pierced in the shoulder. i of disk 0.

The lines M represent gage-marks, which are used to indicate angles foradjusting the table. The pin L enters one of these holes is and holdsthe table momentarily until the operator can tighten the nut to secureit rigidly in position. These features may, however, be dispensed withand a setscrew employed for that purpose.

0 represents a table,which is secured upon the top of. section G in anydesired manner. Whenever the table 0 is adjusted at an angle to thehorizon,the center of the table is moved away from the vertical plane ofthe drill-spilt die. The inner arm-section, G, is divided at its rear,as atR, and the divisions are connected by a bolt and nut, 1%,(see Fig.2,) in such manner that by loosening the nut the said armsection can berotated radially or in a direction around the pillar B, and in such movement it will carry with it the loosely-supported rack-bar F. \Vhen therequired radial adjustment is obtained, the nut is tightened up, therebyclamping the inner arm-section on the pillar. In this way the sectionalarm can be adjusted in a direction around the pillar to adjust thecenter of the work-supporting table into or out of the vertical plane ofthe drillspindle. The vertical adjustment of the sectional arm islikewise made by loosening the nut and bolt R and rotating the pinion bin the proper direction, aftenwhich the nut is tightened up to clamp theinner arm-section in its adjusted position on the pillar.

I may employ gearing to adjust the outer arm-section, G, angularly froma horizontal plane, in which event the pin L and holes k may bedispensed with.

I do not broadly claim a work-supporting table arranged beneath adrill-spindle and capable of vertical movement, an angular adjustmentfrom a horizontal plane, and a lateral movementin a direction around thepillar carrying the drill-spindle.

Having thus described my invention, what I claim is p 1. The combinationof apillar for carrying a drill-spindle, the inner arm section, G,encircling the pillar and adapted to be moved vertically and in adirection around the same, and having the circular groove I and annularbearing '6, the outer arm-section, G, centrally pivoted to the otherarm-section by the bolt H, and having the annular bearing 6, the bolt J,connected with the outer arm-section, and having its head in the annulargroove, and a work-supporting table on the outer end of the outer armsection, G, substantially as de scribed.

2. The combination, with a pillar having the vertical rack F, of theinner arm-section, G, carrying the gear b, engaging the rack and capableof adjustment in a direction around the pillar, the outer arm-section,G, swiveled to the inner arm-section for angular adjustment fromahorizontal plane, andawork-supporting table on the outer arm-section,substantially as described.

3. The combination of a pillar for carrying a drill-spindle, a rack, F,arranged vertically on the pillar, an inner arm-section, G, encirclingthe pillar, and having a gear, b,engaging the rack and capable ofadjustment in a direction around the pillar, the outer armsection, G,carrying a work-supporting table, the pivot-bolt H,centrally connectingthe two arm-sections, andthe annular groovebearing e andi at the outeradjoining edges of the arm sections, substantially as described.

In testimony whereof I have hereunto set my hand.

PERRIN G. MARCH.

\Vitn esses:

M. E. MILLIKAN, J OHN E. J ONES.

